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	<entry>
		<id>https://ehash.iaik.tugraz.at/index.php?title=Grindahl-512&amp;diff=1989</id>
		<title>Grindahl-512</title>
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		<updated>2008-03-31T09:39:34Z</updated>

		<summary type="html">&lt;p&gt;Vincent: /* Generic Attacks */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;== Specification ==&lt;br /&gt;
&lt;br /&gt;
* Specification: [http://www2.mat.dtu.dk/people/Lars.R.Knudsen/grindahl/ Web page of the Grindahl hash functions] &lt;br /&gt;
&lt;br /&gt;
* digest size: 512 bits&lt;br /&gt;
* max. message length: &amp;lt; 2&amp;lt;sup&amp;gt;64&amp;lt;/sup&amp;gt; bits&lt;br /&gt;
* compression function: 64-bit message block, 104 byte state&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&amp;lt;bibtex&amp;gt;&lt;br /&gt;
@inproceedings{fseKnudsenRT07,&lt;br /&gt;
  author    = {Lars R. Knudsen and Christian Rechberger and S&amp;amp;oslash;ren S. Thomsen},&lt;br /&gt;
  title     = {The Grindahl Hash Functions},&lt;br /&gt;
  pages     = {39-57},&lt;br /&gt;
  url        = {http://dx.doi.org/10.1007/978-3-540-74619-5_3},&lt;br /&gt;
  editor    = {Alex Biryukov},&lt;br /&gt;
  booktitle = {FSE},&lt;br /&gt;
  publisher = {Springer},&lt;br /&gt;
  series    = {LNCS},&lt;br /&gt;
  volume    = {4593},&lt;br /&gt;
  year      = {2007},&lt;br /&gt;
  isbn      = {978-3-540-74617-1},&lt;br /&gt;
  abstract  = {In this paper we propose the Grindahl hash functions, &lt;br /&gt;
which are based on components of the Rijndael algorithm. To make collision&lt;br /&gt;
search sufficiently difficult, this design has the important feature that&lt;br /&gt;
no low-weight characteristics form collisions, and at the same time it limits&lt;br /&gt;
access to the state. We propose two concrete hash functions, Grindahl-256 &lt;br /&gt;
and Grindahl-512 with claimed security levels with respect to collision, &lt;br /&gt;
preimage and second preimage attacks of 2&amp;lt;sup&amp;gt;128&amp;lt;/sup&amp;gt; and 2&amp;lt;sup&amp;gt;256&amp;lt;/sup&amp;gt;, respectively. Both &lt;br /&gt;
proposals have lower memory requirements than other hash functions at comparable speeds and security levels.},&lt;br /&gt;
}&lt;br /&gt;
&amp;lt;/bibtex&amp;gt;&lt;br /&gt;
&lt;br /&gt;
== Cryptanalysis ==&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
=== Best Known Results ===&lt;br /&gt;
No attacks on Grindahl-512 are known.&lt;br /&gt;
&lt;br /&gt;
----&lt;br /&gt;
&lt;br /&gt;
=== Generic Attacks ===&lt;br /&gt;
* Grindahl is not a design following the Merkle-Damgaard construction principle. [[GenericAttacksHash| Generic Attacks on Hash Functions]]&lt;br /&gt;
&lt;br /&gt;
----&lt;br /&gt;
&lt;br /&gt;
=== Collision Attacks ===&lt;br /&gt;
&lt;br /&gt;
----&lt;br /&gt;
&lt;br /&gt;
=== Second Preimage Attacks ===&lt;br /&gt;
&lt;br /&gt;
----&lt;br /&gt;
&lt;br /&gt;
=== Preimage Attacks ===&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
----&lt;br /&gt;
&lt;br /&gt;
=== Others ===&lt;/div&gt;</summary>
		<author><name>Vincent</name></author>
		
	</entry>
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